AI Analysis · Q1 2026

Soroban Capital Partners' Q1 2026 13F reveals one of the most concentrated mega-cap technology bets among large hedge funds, with reported assets surging to $51.8B from $14.3B a quarter earlier. The portfolio is dominated by three names: Microsoft (MSFT) at 45.4% ($23.5B) after a roughly 1,536% share-count increase, Meta Platforms (META) at 23.6% ($12.2B) following an approximately 1,724% increase, and Amazon (AMZN) at 11.4% ($5.9B, up about 218%). Those three positions alone account for over 80% of the book. Against that aggressive build, Soroban pared utility and infrastructure exposure — trimming Southern Co (-61%), American Electric Power (-56%) and Rexford Industrial (-61%) — and opened a new $0.9B Domino's Pizza (DPZ) position while exiting Brookfield, Union Pacific and CSX. The filing reads as a high-conviction concentration into platform technology funded by the liquidation of defensive and transport holdings.